// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CC_BLIMP_REMOTE_COMPOSITOR_BRIDGE_CLIENT_H_
#define CC_BLIMP_REMOTE_COMPOSITOR_BRIDGE_CLIENT_H_

#include <unordered_map>

#include "base/macros.h"
#include "cc/base/cc_export.h"

namespace gfx {
class ScrollOffset;
} // namespace gfx

namespace cc {
namespace proto {
    class ClientStateUpdate;
} // namespace proto

class CC_EXPORT RemoteCompositorBridgeClient {
public:
    using ScrollOffsetMap = std::unordered_map<int, gfx::ScrollOffset>;

    virtual ~RemoteCompositorBridgeClient() { }

    // Called in response to a ScheduleMainFrame request made on the
    // RemoteCompositorBridge.
    // Note: The method should always be invoked asynchronously after the request
    // is made.
    virtual void BeginMainFrame() = 0;

    // Applied state updates reported from the client onto the main thread state
    // on the engine.
    virtual void ApplyStateUpdateFromClient(
        const proto::ClientStateUpdate& client_state_update)
        = 0;
};

} // namespace cc

#endif // CC_BLIMP_REMOTE_COMPOSITOR_BRIDGE_CLIENT_H_
